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path: root/src/gallium/drivers/nv04/nv04_prim_vbuf.c
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Diffstat (limited to 'src/gallium/drivers/nv04/nv04_prim_vbuf.c')
-rw-r--r--src/gallium/drivers/nv04/nv04_prim_vbuf.c309
1 files changed, 309 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv04/nv04_prim_vbuf.c b/src/gallium/drivers/nv04/nv04_prim_vbuf.c
new file mode 100644
index 0000000000..18a8872ae3
--- /dev/null
+++ b/src/gallium/drivers/nv04/nv04_prim_vbuf.c
@@ -0,0 +1,309 @@
+
+#include "pipe/p_debug.h"
+#include "pipe/p_inlines.h"
+#include "pipe/internal/p_winsys_screen.h"
+#include "pipe/p_compiler.h"
+
+#include "draw/draw_vbuf.h"
+
+#include "nv04_context.h"
+#include "nv04_state.h"
+
+#define VERTEX_SIZE 40
+#define VERTEX_BUFFER_SIZE (4096*VERTEX_SIZE) // 4096 vertices of 40 bytes each
+
+/**
+ * Primitive renderer for nv04.
+ */
+struct nv04_vbuf_render {
+ struct vbuf_render base;
+
+ struct nv04_context *nv04;
+
+ /** Vertex buffer */
+ unsigned char* buffer;
+
+ /** Vertex size in bytes */
+ unsigned vertex_size;
+
+ /** Current primitive */
+ unsigned prim;
+};
+
+
+/**
+ * Basically a cast wrapper.
+ */
+static INLINE struct nv04_vbuf_render *
+nv04_vbuf_render( struct vbuf_render *render )
+{
+ assert(render);
+ return (struct nv04_vbuf_render *)render;
+}
+
+
+static const struct vertex_info *
+nv04_vbuf_render_get_vertex_info( struct vbuf_render *render )
+{
+ struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+ struct nv04_context *nv04 = nv04_render->nv04;
+ return &nv04->vertex_info;
+}
+
+
+static void *
+nv04_vbuf_render_allocate_vertices( struct vbuf_render *render,
+ ushort vertex_size,
+ ushort nr_vertices )
+{
+ struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+
+ nv04_render->buffer = (unsigned char*) MALLOC(VERTEX_BUFFER_SIZE);
+ assert(!nv04_render->buffer);
+
+ return nv04_render->buffer;
+}
+
+
+static boolean
+nv04_vbuf_render_set_primitive( struct vbuf_render *render,
+ unsigned prim )
+{
+ struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+
+ if (prim <= PIPE_PRIM_LINE_STRIP)
+ return FALSE;
+
+ nv04_render->prim = prim;
+ return TRUE;
+}
+
+static INLINE void nv04_2triangles(struct nv04_context* nv04, unsigned char* buffer, ushort v0, ushort v1, ushort v2, ushort v3, ushort v4, ushort v5)
+{
+ BEGIN_RING(fahrenheit,NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0xA),49);
+ OUT_RINGp(buffer + VERTEX_SIZE * v0,8);
+ OUT_RINGp(buffer + VERTEX_SIZE * v1,8);
+ OUT_RINGp(buffer + VERTEX_SIZE * v2,8);
+ OUT_RINGp(buffer + VERTEX_SIZE * v3,8);
+ OUT_RINGp(buffer + VERTEX_SIZE * v4,8);
+ OUT_RINGp(buffer + VERTEX_SIZE * v5,8);
+ OUT_RING(0xFEDCBA);
+}
+
+static INLINE void nv04_1triangle(struct nv04_context* nv04, unsigned char* buffer, ushort v0, ushort v1, ushort v2)
+{
+ BEGIN_RING(fahrenheit,NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0xD),25);
+ OUT_RINGp(buffer + VERTEX_SIZE * v0,8);
+ OUT_RINGp(buffer + VERTEX_SIZE * v1,8);
+ OUT_RINGp(buffer + VERTEX_SIZE * v2,8);
+ OUT_RING(0xFED);
+}
+
+static INLINE void nv04_1quad(struct nv04_context* nv04, unsigned char* buffer, ushort v0, ushort v1, ushort v2, ushort v3)
+{
+ BEGIN_RING(fahrenheit,NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0xC),33);
+ OUT_RINGp(buffer + VERTEX_SIZE * v0,8);
+ OUT_RINGp(buffer + VERTEX_SIZE * v1,8);
+ OUT_RINGp(buffer + VERTEX_SIZE * v2,8);
+ OUT_RINGp(buffer + VERTEX_SIZE * v3,8);
+ OUT_RING(0xFECEDC);
+}
+
+static void nv04_vbuf_render_triangles_elts(struct nv04_vbuf_render * render, const ushort * indices, uint nr_indices)
+{
+ unsigned char* buffer = render->buffer;
+ struct nv04_context* nv04 = render->nv04;
+ int i;
+
+ for( i=0; i< nr_indices-5; i+=6)
+ nv04_2triangles(nv04,
+ buffer,
+ indices[i+0],
+ indices[i+1],
+ indices[i+2],
+ indices[i+3],
+ indices[i+4],
+ indices[i+5]
+ );
+ if (i != nr_indices)
+ {
+ nv04_1triangle(nv04,
+ buffer,
+ indices[i+0],
+ indices[i+1],
+ indices[i+2]
+ );
+ i+=3;
+ }
+ if (i != nr_indices)
+ NOUVEAU_ERR("Houston, we have lost some vertices\n");
+}
+
+static void nv04_vbuf_render_tri_strip_elts(struct nv04_vbuf_render* render, const ushort* indices, uint nr_indices)
+{
+ const uint32_t striptbl[]={0x321210,0x543432,0x765654,0x987876,0xBA9A98,0xDCBCBA,0xFEDEDC};
+ unsigned char* buffer = render->buffer;
+ struct nv04_context* nv04 = render->nv04;
+ int i,j;
+
+ for(i = 0; i<nr_indices; i+=14)
+ {
+ int numvert = MIN2(16, nr_indices - i);
+ int numtri = numvert - 2;
+ if (numvert<3)
+ break;
+
+ BEGIN_RING( fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0x0), numvert*8 );
+ for(j = 0; j<numvert; j++)
+ OUT_RINGp( buffer + VERTEX_SIZE * indices [i+j], 8 );
+
+ BEGIN_RING_NI( fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_DRAWPRIMITIVE(0), (numtri+1)/2 );
+ for(j = 0; j<numtri/2; j++ )
+ OUT_RING(striptbl[j]);
+ if (numtri%2)
+ OUT_RING(striptbl[numtri/2]&0xFFF);
+ }
+}
+
+static void nv04_vbuf_render_tri_fan_elts(struct nv04_vbuf_render* render, const ushort* indices, uint nr_indices)
+{
+ const uint32_t fantbl[]={0x320210,0x540430,0x760650,0x980870,0xBA0A90,0xDC0CB0,0xFE0ED0};
+ unsigned char* buffer = render->buffer;
+ struct nv04_context* nv04 = render->nv04;
+ int i,j;
+
+ BEGIN_RING(fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0x0), 8);
+ OUT_RINGp(buffer + VERTEX_SIZE * indices[0], 8);
+
+ for(i = 1; i<nr_indices; i+=14)
+ {
+ int numvert=MIN2(15, nr_indices - i);
+ int numtri=numvert-2;
+ if (numvert < 3)
+ break;
+
+ BEGIN_RING(fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0x1), numvert*8);
+
+ for(j=0;j<numvert;j++)
+ OUT_RINGp( buffer + VERTEX_SIZE * indices[ i+j ], 8 );
+
+ BEGIN_RING_NI(fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_DRAWPRIMITIVE(0), (numtri+1)/2);
+ for(j = 0; j<numtri/2; j++)
+ OUT_RING(fantbl[j]);
+ if (numtri%2)
+ OUT_RING(fantbl[numtri/2]&0xFFF);
+ }
+}
+
+static void nv04_vbuf_render_quads_elts(struct nv04_vbuf_render* render, const ushort* indices, uint nr_indices)
+{
+ unsigned char* buffer = render->buffer;
+ struct nv04_context* nv04 = render->nv04;
+ int i;
+
+ for(i = 0; i < nr_indices; i += 4)
+ nv04_1quad(nv04,
+ buffer,
+ indices[i+0],
+ indices[i+1],
+ indices[i+2],
+ indices[i+3]
+ );
+}
+
+
+static void
+nv04_vbuf_render_draw( struct vbuf_render *render,
+ const ushort *indices,
+ uint nr_indices)
+{
+ struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+
+ // emit the indices
+ switch( nv04_render->prim )
+ {
+ case PIPE_PRIM_TRIANGLES:
+ nv04_vbuf_render_triangles_elts(nv04_render, indices, nr_indices);
+ break;
+ case PIPE_PRIM_QUAD_STRIP:
+ case PIPE_PRIM_TRIANGLE_STRIP:
+ nv04_vbuf_render_tri_strip_elts(nv04_render, indices, nr_indices);
+ break;
+ case PIPE_PRIM_TRIANGLE_FAN:
+ case PIPE_PRIM_POLYGON:
+ nv04_vbuf_render_tri_fan_elts(nv04_render, indices, nr_indices);
+ break;
+ case PIPE_PRIM_QUADS:
+ nv04_vbuf_render_quads_elts(nv04_render, indices, nr_indices);
+ break;
+ default:
+ NOUVEAU_ERR("You have to implement primitive %d, young padawan\n", nv04_render->prim);
+ break;
+ }
+}
+
+
+static void
+nv04_vbuf_render_release_vertices( struct vbuf_render *render,
+ void *vertices,
+ unsigned vertex_size,
+ unsigned vertices_used )
+{
+ struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+
+ free(nv04_render->buffer);
+ nv04_render->buffer = NULL;
+}
+
+
+static void
+nv04_vbuf_render_destroy( struct vbuf_render *render )
+{
+ struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+ FREE(nv04_render);
+}
+
+
+/**
+ * Create a new primitive render.
+ */
+static struct vbuf_render *
+nv04_vbuf_render_create( struct nv04_context *nv04 )
+{
+ struct nv04_vbuf_render *nv04_render = CALLOC_STRUCT(nv04_vbuf_render);
+
+ nv04_render->nv04 = nv04;
+
+ nv04_render->base.max_vertex_buffer_bytes = VERTEX_BUFFER_SIZE;
+ nv04_render->base.max_indices = 65536;
+ nv04_render->base.get_vertex_info = nv04_vbuf_render_get_vertex_info;
+ nv04_render->base.allocate_vertices = nv04_vbuf_render_allocate_vertices;
+ nv04_render->base.set_primitive = nv04_vbuf_render_set_primitive;
+ nv04_render->base.draw = nv04_vbuf_render_draw;
+ nv04_render->base.release_vertices = nv04_vbuf_render_release_vertices;
+ nv04_render->base.destroy = nv04_vbuf_render_destroy;
+
+ return &nv04_render->base;
+}
+
+
+/**
+ * Create a new primitive vbuf/render stage.
+ */
+struct draw_stage *nv04_draw_vbuf_stage( struct nv04_context *nv04 )
+{
+ struct vbuf_render *render;
+ struct draw_stage *stage;
+
+ render = nv04_vbuf_render_create(nv04);
+ if(!render)
+ return NULL;
+
+ stage = draw_vbuf_stage( nv04->draw, render );
+ if(!stage) {
+ render->destroy(render);
+ return NULL;
+ }
+
+ return stage;
+}